Lamp-chimney fastening



(No Model.)

J. S. FOSTER.

LAMP GHIMNEY FASTENING.

No. 350,125. Patented Oct. 5, 1886.

l lib, I

yUNTTED STATES PATENT OFFICE.

.IOSEPII S. FOSTER, OF SALEM, MASSACHUSETTS.

LAMP-CHIMNEY FASTENING.

SPECIFCATION forming part of Letters Patent No. 350,125, dated Octobfr 5, 1886.

Application filed September ll, 1885. Serial No. 176,?28. (No model.)

To all whom it may concern,.-

Be it known that I, JosEPH S. Fos'rER, of Salem, county of Essex, and State of Massa chusetts, have invented an Improvement in Lamp-Chimney-Fastening Devices or Clutches, of which the following description, in connection with the accompanying drawings, isa specification, like letters on the drawings representing like parts.

As heretofore constructed, lamps have been wanting in means to securely hold the usual chimney in place upon the burner, so that the said lamp may be handled without danger of dislodging the chimney. To prevent the chimney from falling off the burner, the latter has been provided with upwardly-extended yielding arms, down between which the base of the chimney is pressed to a seat on the said burner, the said yielding arms pressing against the cireu mference of the base part of the chimney to hold it in its proper position'. The chimney has also been surrounded at its top by a spiral spring connected by rods with the burner; and so, also, the base of the chimney has been surrounded by a clamp, as in United States Patent No. 34,900, dated April 8, '1862.

My invention has 'for its object to obviate this defect; and it consists, essentially, of a chimney provided with spring-actuated fastening devices, to be described, preferably located outside and near the base ofthe chimney, said fastening devices being bent or hooked at their ends, to engage the rim of the burner and hold the chimney securely in place until positively released by hand.

Figure l is a vertical elevation of a burner and chimney, the latter provided with my improved fastener or clutch g Fig. 2, a sectional view with the chimney broken off, showing amoditieation of the fastener', and Fig. is a detail view, to be referred to.

The burner A and the yielding arms A1 are of usual construction. The chimney A, of glass or other usual material, is provided with fastening devices ay (t, which are secured to the outside of the chimney A", near its base a', by means of glue or cement capable of retaining its adhesive property, even though exposed to a high temperature. The fastening device u (shown in Figs. l and 3) is composed of two independent pieces of metal, at a, each provided with ears or projections I) b,th rough which rod c is extended, the said rod serving as a pivot for the pieces at ci, the piece i be ing longer than the piece a, and being curved 55 or bent at its end, so as to form a hook, a", to grasp the rim e of the burner when the chimney is placed in position thereon. rlhe rod c is encircled by a spring, et', having its oppo site ends e e bearing against the pieces fr a, so as to force the said pieces together, so that the hooked end u* will be in line with the edge or the rim c of the burner, the ends c e of the said spring being brought or moved toward each other' when the hooked end a* strikes the 6; said rim, the said spring being of sufficient strength to hold the chimney irmly on the burner when the hooked end ct has engaged the rim c.

Other modifications ofthe fastener or el u tch- 7c such as shown in Fig. 2-may be used without departing from my invention, and so I do not limit myself to the special form ol' fastener Shown.

In Fig. 2 the fastening device is shown as a 75 piece ofspring metal bent to embrace the end of the chimney and to present a spring-hook, as at at. It is obvious that by forcing the outwardly-turned upper ends of the arms a of the fastening devices inward the hooks a" at the lower ends thereof' may be disengaged from the rim c of the burner, so thai the chimney may be readily removed.

I claimrlhe combination, with a lamp-chimney, of S5 spring fastening devices secured to the base thereof and provided at their lower ends, bclow said base, with hooks, and having at their upper ends outwardly-turned arms, which, when forced inward, release said hooks, substantially as set forth.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH. S. FOSTER.

Vitnessos:

MARY T. HANNAN, HENRY M. MEEK. 

